refactor: moved MapUtil implemented by reflect API to another package

devkit-utils/src/main/java/com/onixbyte/devkit/utils/AesUtil.java

@@ -34,8 +34,7 @@ import java.util.Objects;
 import java.util.UUID;
 
 /**
- * {@link AesUtil} can help you encrypt and decrypt data with specified secret
+ * {@link AesUtil} can help you encrypt and decrypt data with specified secret by AES algorithm.
- * by AES algorithm.
  *
  * @author hubin@baomidou
  * @version 1.1.0
@@ -81,8 +80,9 @@ public final class AesUtil {
             var cipher = Cipher.getInstance(AES_CBC_CIPHER);
             cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, new IvParameterSpec(secret));
             return cipher.doFinal(data);
-        } catch (NoSuchAlgorithmException | NoSuchPaddingException | UnsupportedOperationException |
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException |
-                 InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException |
+                 UnsupportedOperationException | InvalidKeyException |
+                 InvalidAlgorithmParameterException | IllegalBlockSizeException |
                  BadPaddingException exception) {
             log.error(exception.getMessage());
             for (var stackTraceElement : exception.getStackTrace()) {
@@ -100,7 +100,8 @@ public final class AesUtil {
      * @return the encryption result or {@code null} if encryption failed
      */
     public static String encrypt(String data, String secret) {
-        return Base64.getEncoder().encodeToString(encrypt(data.getBytes(StandardCharsets.UTF_8), secret.getBytes(StandardCharsets.UTF_8)));
+        return Base64.getEncoder().encodeToString(encrypt(data.getBytes(StandardCharsets.UTF_8),
+                secret.getBytes(StandardCharsets.UTF_8)));
     }
 
     /**

devkit-utils/src/main/java/com/onixbyte/devkit/utils/Base64Util.java

@@ -49,7 +49,7 @@ import java.util.Objects;
  * provided. It is recommended to specify the charset explicitly to ensure consistent
  * encoding and decoding.
  *
- * @author Zihlu Wang
+ * @author zihluwang
  * @version 1.1.0
  * @since 1.0.0
  */

devkit-utils/src/main/java/com/onixbyte/devkit/utils/ChainedCalcUtil.java

@@ -293,7 +293,9 @@ public final class ChainedCalcUtil {
      *                           or null if not applicable
      * @return a ChainedCalcUtil instance with the updated value
      */
-    private ChainedCalcUtil operator(BiFunction<BigDecimal, BigDecimal, BigDecimal> operator, Object other, Integer beforeOperateScale) {
+    private ChainedCalcUtil operator(BiFunction<BigDecimal, BigDecimal, BigDecimal> operator,
+                                     Object other,
+                                     Integer beforeOperateScale) {
         return baseOperator((otherValue) ->
                 operator.apply(this.value, otherValue),
                 other,
@@ -311,7 +313,8 @@ public final class ChainedCalcUtil {
      * @return a ChainedCalcUtil instance with the updated value
      */
     private synchronized ChainedCalcUtil baseOperator(Function<BigDecimal, BigDecimal> operatorFunction,
-                                                      Object anotherValue, Integer beforeOperateScale) {
+                                                      Object anotherValue,
+                                                      Integer beforeOperateScale) {
         if (Objects.isNull(anotherValue)) {
             return this;
         }

devkit-utils/src/main/java/com/onixbyte/devkit/utils/HashUtil.java

@@ -61,7 +61,7 @@ import java.util.Optional;
  * for data integrity checks and password storage, but they should not be used for
  * encryption purposes.
  *
- * @author Zihlu Wang
+ * @author zihluwang
  * @version 1.1.0
  * @see java.security.MessageDigest
  * @since 1.0.0

devkit-utils/src/main/java/com/onixbyte/devkit/utils/MapUtil.java

@@ -30,9 +30,8 @@ import java.util.Optional;
  * Note: Since version 1.4.2, this util class removed reflection API and transferred to a safer API.
  * Please see documentation for more information.
  *
- * @author Zihlu Wang
+ * @author zihluwang
  * @version 1.4.2
- * @see com.onixbyte.devkit.utils.unsafe.ReflectMapUtil
  * @since 1.0.0
  */
 @Slf4j

key-pair-loader/src/main/java/com/onixbyte/security/KeyLoader.java

@@ -50,10 +50,10 @@ public class KeyLoader {
      *
      * @param pemKeyText pem-formatted key text
      * @return loaded private key
-     * @throws KeyLoadingException if the generated key is not a {@link ECPrivateKey} instance, or EC Key Factory is
+     * @throws KeyLoadingException if the generated key is not a {@link ECPrivateKey} instance,
-     *                             not loaded, or key spec is invalid
+     *                             or EC Key Factory is not loaded, or key spec is invalid
      */
-    public ECPrivateKey loadEcdsaPrivateKey(String pemKeyText) {
+    public static ECPrivateKey loadEcdsaPrivateKey(String pemKeyText) {
         try {
             var decodedKeyString = Base64.getDecoder().decode(pemKeyText);
             var keySpec = new PKCS8EncodedKeySpec(decodedKeyString);
@@ -76,10 +76,10 @@ public class KeyLoader {
      *
      * @param pemKeyText pem-formatted key text
      * @return loaded private key
-     * @throws KeyLoadingException if the generated key is not a {@link ECPrivateKey} instance, or EC Key Factory is
+     * @throws KeyLoadingException if the generated key is not a {@link ECPrivateKey} instance,
-     *                             not loaded, or key spec is invalid
+     *                             or EC Key Factory is not loaded, or key spec is invalid
      */
-    public ECPublicKey loadEcdsaPublicKey(String pemKeyText) {
+    public static ECPublicKey loadEcdsaPublicKey(String pemKeyText) {
         try {
             var keyBytes = Base64.getDecoder().decode(pemKeyText);
             var spec = new X509EncodedKeySpec(keyBytes);

key-pair-loader/src/main/java/com/onixbyte/security/exception/KeyLoadingException.java

@@ -17,24 +17,63 @@
 
 package com.onixbyte.security.exception;
 
+/**
+ * {@code KeyLoadingException} is an exception indicating an error occurred while loading a key.
+ *
+ * @author zihluwang
+ * @version 1.6.0
+ * @since 1.6.0
+ */
 public class KeyLoadingException extends RuntimeException {
 
+    /**
+     * Creates a new instance of {@code KeyLoadingException} without a specific message or cause.
+     */
     public KeyLoadingException() {
     }
 
+    /**
+     * Creates a new instance of {@code KeyLoadingException} with the specified detail message.
+     *
+     * @param message the detail message
+     */
     public KeyLoadingException(String message) {
         super(message);
     }
 
+    /**
+     * Creates a new instance of {@code KeyLoadingException} with the specified detail message
+     * and cause.
+     *
+     * @param message the detail message
+     * @param cause   the cause of this exception
+     */
     public KeyLoadingException(String message, Throwable cause) {
         super(message, cause);
     }
 
+    /**
+     * Creates a new instance of {@code KeyLoadingException} with the specified cause.
+     *
+     * @param cause the cause of this exception
+     */
     public KeyLoadingException(Throwable cause) {
         super(cause);
     }
 
-    public KeyLoadingException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+    /**
+     * Constructs a new exception with the specified detail message, cause, suppression enabled
+     * or disabled, and writable stack trace enabled or disabled.
+     *
+     * @param message the detail message
+     * @param cause the cause of this exception
+     * @param enableSuppression whether suppression is enabled or disabled
+     * @param writableStackTrace whether the stack trace should be writable
+     */
+    public KeyLoadingException(String message,
+                               Throwable cause,
+                               boolean enableSuppression,
+                               boolean writableStackTrace) {
         super(message, cause, enableSuppression, writableStackTrace);
     }
 }

map-util-unsafe/src/main/java/com/onixbyte/devkit/utils/unsafe/ReflectMapUtil.java

@@ -53,7 +53,7 @@ public final class ReflectMapUtil {
         var declaredFields = obj.getClass().getDeclaredFields();
         for (var field : declaredFields) {
             field.setAccessible(true);
-            Object result = field.get(obj);
+            var result = field.get(obj);
             if (result != null) {
                 map.put(field.getName(), result);
             }
@@ -157,7 +157,8 @@ public final class ReflectMapUtil {
      * @throws IllegalAccessException    if an error occurs while accessing the field
      * @throws NoSuchMethodException     if the specific setter is not present
      */
-    public static void setFieldValue(Object obj, String fieldName, Object fieldValue) throws InvocationTargetException, IllegalAccessException, NoSuchMethodException {
+    public static void setFieldValue(Object obj, String fieldName, Object fieldValue)
+            throws InvocationTargetException, IllegalAccessException, NoSuchMethodException {
         var objectClass = obj.getClass();
         var methodName = getMethodName("set", fieldName);
         var method = objectClass.getDeclaredMethod(methodName, fieldValue.getClass());

simple-jwt-authzero/build.gradle.kts

@@ -33,6 +33,7 @@ version = buildVersion
 dependencies {
     implementation(project(":devkit-utils"))
     implementation(project(":guid"))
+    implementation(project(":key-pair-loader"))
     implementation(project(":simple-jwt-facade"))
     implementation("com.fasterxml.jackson.core:jackson-databind:$jacksonVersion")
     implementation("com.auth0:java-jwt:$javaJwtVersion")

simple-jwt-authzero/src/main/java/com/onixbyte/simplejwt/authzero/AuthzeroTokenResolver.java

@@ -25,6 +25,7 @@ import com.onixbyte.simplejwt.TokenResolver;
 import com.onixbyte.simplejwt.annotations.ExcludeFromPayload;
 import com.onixbyte.simplejwt.annotations.TokenEnum;
 import com.onixbyte.simplejwt.authzero.config.AuthzeroTokenResolverConfig;
+import com.onixbyte.simplejwt.config.TokenResolverConfig;
 import com.onixbyte.simplejwt.constants.PredefinedKeys;
 import com.onixbyte.simplejwt.constants.TokenAlgorithm;
 import com.auth0.jwt.JWT;
@@ -45,15 +46,13 @@ import java.time.ZoneId;
 import java.util.*;
 
 /**
- * The {@code AuthzeroTokenResolver} class is an implementation of the {@link
+ * The {@code AuthzeroTokenResolver} class is an implementation of the {@link TokenResolver}
- * TokenResolver} interface. It uses the {@code
+ * interface. It uses the {@code com.auth0:java-jwt} library to handle JSON Web Token (JWT)
- * com.auth0:java-jwt} library to handle JSON Web Token (JWT) resolution. This
+ * resolution. This resolver provides functionality to create, extract, verify, and renew JWT
- * resolver provides functionality to create, extract, verify, and renew JWT
  * tokens using various algorithms and custom payload data.
  * <p>
  * <b>Usage:</b>
- * To use the {@code AuthzeroTokenResolver}, first, create an instance of this
+ * To use the {@code AuthzeroTokenResolver}, first, create an instance of this class:
- * class:
  * <pre>{@code
  * TokenResolver<DecodedJWT> tokenResolver =
  *     new AuthzeroTokenResolver(TokenAlgorithm.HS256,
@@ -62,8 +61,7 @@ import java.util.*;
  *                               "Token Secret");
  * }</pre>
  * <p>
- * Then, you can utilize the various methods provided by this resolver to
+ * Then, you can utilize the various methods provided by this resolver to handle JWT tokens:
- * handle JWT tokens:
  * <pre>{@code
  * // Creating a new JWT token
  * String token =
@@ -82,10 +80,9 @@ import java.util.*;
  * }</pre>
  * <p>
  * <b>Note:</b>
- * It is essential to configure the appropriate algorithms, secret, and issuer
+ * It is essential to configure the appropriate algorithms, secret, and issuer according to your
- * according to your specific use case when using this resolver.
+ * specific use case when using this resolver. Additionally, ensure that the
- * Additionally, ensure that the {@code com.auth0:java-jwt} library is
+ * {@code com.auth0:java-jwt} library is correctly configured in your project's dependencies.
- * correctly configured in your project's dependencies.
  *
  * @author Zihlu Wang
  * @version 1.1.1
@@ -100,61 +97,77 @@ import java.util.*;
 public class AuthzeroTokenResolver implements TokenResolver<DecodedJWT> {
 
     /**
-     * Creates a new instance of {@code AuthzeroTokenResolver} with the
+     * Creates a new instance of {@code AuthzeroTokenResolver} with the provided configurations.
-     * provided configurations.
      *
-     * @param jtiCreator   the {@link GuidCreator} used for generating unique
+     * @param jtiCreator   the {@link GuidCreator} used for generating unique identifiers for "jti"
-     *                     identifiers for "jti" claim in JWT tokens
+     *                     claim in JWT tokens
-     * @param algorithm    the algorithm used for signing and verifying JWT
+     * @param algorithm    the algorithm used for signing and verifying JWT tokens
-     *                     tokens
      * @param issuer       the issuer claim value to be included in JWT tokens
-     * @param secret       the secret used for HMAC-based algorithms (HS256,
+     * @param privateKey   the secret used for HMAC-based algorithms (HS256, HS384, HS512) for
-     *                     HS384, HS512) for token signing and verification
+     *                     token signing and verification, or the private key for ECDSA-based
+     *                     algorithms
+     * @param publicKey    the public key for ECDSA-based algorithms
      * @param objectMapper JSON handler
      */
-    public AuthzeroTokenResolver(GuidCreator<?> jtiCreator, TokenAlgorithm algorithm, String issuer, String secret, ObjectMapper objectMapper) {
+    public AuthzeroTokenResolver(GuidCreator<?> jtiCreator,
-        if (secret == null || secret.isBlank()) {
+                                 TokenAlgorithm algorithm,
-            throw new IllegalArgumentException("A secret is required to build a JSON Web Token.");
+                                 String issuer,
-        }
+                                 String privateKey,
+                                 String publicKey,
+                                 ObjectMapper objectMapper) {
+        if (TokenResolverConfig.HMAC_ALGORITHMS.contains(algorithm)) {
+            if (privateKey == null || privateKey.isBlank()) {
+                throw new IllegalArgumentException("A secret is required to build a JSON Web Token.");
+            }
 
-        if (secret.length() < 32) {
+            if (privateKey.length() < 32) {
-            log.warn("The provided secret which owns {} characters is too weak. Please consider replacing it with a stronger one.", secret.length());
+                log.warn("The provided secret which owns {} characters is too weak. Please consider" +
+                        " replacing it with a stronger one.", privateKey.length());
+            }
         }
 
         this.jtiCreator = jtiCreator;
         this.algorithm = config
                 .getAlgorithm(algorithm)
-                .apply(secret);
+                .apply(privateKey, publicKey);
         this.issuer = issuer;
         this.verifier = JWT.require(this.algorithm).build();
         this.objectMapper = objectMapper;
     }
 
     /**
-     * Creates a new instance of {@link AuthzeroTokenResolver} with the
+     * Creates a new instance of {@link AuthzeroTokenResolver} with the provided configurations
-     * provided configurations and a simple UUID GuidCreator.
+     * and a simple UUID GuidCreator.
      *
      * @param algorithm    the algorithm used for signing and verifying JWT tokens
      * @param issuer       the issuer claim value to be included in JWT tokens
-     * @param secret       the secret used for HMAC-based algorithms (HS256,
+     * @param privateKey   the secret used for HMAC-based algorithms (HS256, HS384, HS512) for
-     *                     HS384, HS512) for token signing and verification
+     *                     token signing and verification, or the private key for ECDSA-based
+     *                     algorithms
+     * @param publicKey    the public key for ECDSA-based algorithms
      * @param objectMapper Jackson Databind JSON Handler
      */
-    public AuthzeroTokenResolver(TokenAlgorithm algorithm, String issuer, String secret, ObjectMapper objectMapper) {
+    public AuthzeroTokenResolver(TokenAlgorithm algorithm,
-        this(UUID::randomUUID, algorithm, issuer, secret, objectMapper);
+                                 String issuer,
+                                 String privateKey,
+                                 String publicKey,
+                                 ObjectMapper objectMapper) {
+        this(UUID::randomUUID, algorithm, issuer, privateKey, publicKey, objectMapper);
     }
 
     /**
-     * Creates a new instance of {@link AuthzeroTokenResolver} with the
+     * Creates a new instance of {@link AuthzeroTokenResolver} with the provided configurations
-     * provided configurations and a simple UUID GuidCreator.
+     * and a simple UUID GuidCreator.
      *
-     * @param algorithm the algorithm used for signing and verifying JWT tokens
+     * @param algorithm  the algorithm used for signing and verifying JWT tokens
-     * @param issuer    the issuer claim value to be included in JWT tokens
+     * @param issuer     the issuer claim value to be included in JWT tokens
-     * @param secret    the secret used for HMAC-based algorithms (HS256,
+     * @param privateKey the secret used for HMAC-based algorithms (HS256, HS384, HS512) for
-     *                  HS384, HS512) for token signing and verification
+     *                   token signing and verification, or the private key for ECDSA-based
+     *                   algorithms
+     * @param publicKey  the public key for ECDSA-based algorithms
      */
-    public AuthzeroTokenResolver(TokenAlgorithm algorithm, String issuer, String secret) {
+    public AuthzeroTokenResolver(TokenAlgorithm algorithm, String issuer, String privateKey, String publicKey) {
-        this(UUID::randomUUID, algorithm, issuer, secret, new ObjectMapper());
+        this(UUID::randomUUID, algorithm, issuer, privateKey, publicKey, new ObjectMapper());
     }
 
     /**
@@ -163,11 +176,10 @@ public class AuthzeroTokenResolver implements TokenResolver<DecodedJWT> {
      * UUID GuidCreator.
      *
      * @param issuer the issuer claim value to be included in JWT tokens
-     * @param secret the secret used for HMAC-based algorithms (HS256,
+     * @param secret the secret used for HS256 algorithms for token signing and verification
-     *               HS384, HS512) for token signing and verification
      */
     public AuthzeroTokenResolver(String issuer, String secret) {
-        this(UUID::randomUUID, TokenAlgorithm.HS256, issuer, secret, new ObjectMapper());
+        this(UUID::randomUUID, TokenAlgorithm.HS256, issuer, secret, "", new ObjectMapper());
     }
 
     /**
@@ -183,7 +195,7 @@ public class AuthzeroTokenResolver implements TokenResolver<DecodedJWT> {
         this.jtiCreator = UUID::randomUUID;
         this.algorithm = config
                 .getAlgorithm(TokenAlgorithm.HS256)
-                .apply(secret);
+                .apply(secret, "");
         this.issuer = issuer;
         this.verifier = JWT.require(this.algorithm).build();
         this.objectMapper = new ObjectMapper();

simple-jwt-authzero/src/main/java/com/onixbyte/simplejwt/authzero/config/AuthzeroTokenResolverConfig.java

@@ -17,6 +17,7 @@
 
 package com.onixbyte.simplejwt.authzero.config;
 
+import com.onixbyte.security.KeyLoader;
 import com.onixbyte.simplejwt.TokenResolver;
 import com.onixbyte.simplejwt.authzero.AuthzeroTokenResolver;
 import com.onixbyte.simplejwt.config.TokenResolverConfig;
@@ -30,6 +31,7 @@ import java.security.interfaces.ECPrivateKey;
 import java.security.spec.InvalidKeySpecException;
 import java.security.spec.PKCS8EncodedKeySpec;
 import java.util.*;
+import java.util.function.BiFunction;
 import java.util.function.Function;
 
 /**
@@ -58,7 +60,7 @@ import java.util.function.Function;
  * @since 1.0.0
  */
 public final class AuthzeroTokenResolverConfig
-        implements TokenResolverConfig<Function<String, Algorithm>> {
+        implements TokenResolverConfig<BiFunction<String, String, Algorithm>> {
 
     /**
      * Gets the instance of {@code AuthzeroTokenResolverConfig}.
@@ -92,7 +94,7 @@ public final class AuthzeroTokenResolverConfig
      *                                       this implementation
      */
     @Override
-    public Function<String, Algorithm> getAlgorithm(TokenAlgorithm algorithm) {
+    public BiFunction<String, String, Algorithm> getAlgorithm(TokenAlgorithm algorithm) {
         return Optional.of(SUPPORTED_ALGORITHMS).map((entry) -> entry.get(algorithm))
                 .orElseThrow(() -> new UnsupportedAlgorithmException("The specified algorithm is not supported yet."));
     }
@@ -127,26 +129,20 @@ public final class AuthzeroTokenResolverConfig
      * specific algorithms. The mapping is used to provide proper algorithm
      * resolution and processing within the {@link AuthzeroTokenResolver}.
      */
-    private static final Map<TokenAlgorithm, Function<String, Algorithm>> SUPPORTED_ALGORITHMS = new HashMap<>() {{
+    private static final
-        put(TokenAlgorithm.HS256, Algorithm::HMAC256);
+    Map<TokenAlgorithm, BiFunction<String, String, Algorithm>> SUPPORTED_ALGORITHMS =
-        put(TokenAlgorithm.HS384, Algorithm::HMAC384);
+            new HashMap<>() {{
-        put(TokenAlgorithm.HS512, Algorithm::HMAC512);
+        put(TokenAlgorithm.HS256, (String secret, String ignoredValue) ->
-        put(TokenAlgorithm.ES256, (String privateKey) -> {
+                Algorithm.HMAC256(secret));
-            try {
+        put(TokenAlgorithm.HS384, (String secret, String ignoredValue) ->
-                var keyBytes = Base64.getDecoder().decode(privateKey);
+                Algorithm.HMAC384(secret));
-                var spec = new PKCS8EncodedKeySpec(keyBytes);
+        put(TokenAlgorithm.HS512, (String secret, String ignoredValue) ->
-                var kf = KeyFactory.getInstance("EC");
+                Algorithm.HMAC512(secret));
-                var key = kf.generatePrivate(spec);
+        put(TokenAlgorithm.ES256, (String privateKey, String publicKey) ->
-                if (key instanceof ECPrivateKey pk) {
+                Algorithm.ECDSA256(KeyLoader.loadEcdsaPrivateKey(privateKey)));
-                    return Algorithm.ECDSA256(pk);
+        put(TokenAlgorithm.ES384, (String privateKey, String publicKey) ->
-                } else {
+                Algorithm.ECDSA256(KeyLoader.loadEcdsaPrivateKey(privateKey)));
-                    throw new RuntimeException("Type error!");
+        put(TokenAlgorithm.ES512, (String privateKey, String publicKey) ->
-                }
+                Algorithm.ECDSA256(KeyLoader.loadEcdsaPrivateKey(privateKey)));
-            } catch (NoSuchAlgorithmException ignored) {
-            } catch (InvalidKeySpecException e) {
-                throw new RuntimeException(e);
-            }
-            return null;
-        });
     }};
 }

simple-jwt-facade/src/main/java/com/onixbyte/simplejwt/config/TokenResolverConfig.java

@@ -20,6 +20,8 @@ package com.onixbyte.simplejwt.config;
 import com.onixbyte.simplejwt.TokenResolver;
 import com.onixbyte.simplejwt.constants.TokenAlgorithm;
 
+import java.util.List;
+
 /**
  * The {@code TokenResolverConfig} provides a mechanism to configure an
  * implementation of {@link TokenResolver} with algorithm functions.
@@ -49,11 +51,15 @@ public interface TokenResolverConfig<Algo> {
      * implementation that can be used by the {@link TokenResolver} to handle
      * the specific algorithm.
      *
-     * @param algorithm the {@link TokenAlgorithm} for which the algorithm
+     * @param algorithm the {@link TokenAlgorithm} for which the algorithm function is required
-     *                  function is required
+     * @return the algorithm function associated with the given {@link TokenAlgorithm}
-     * @return the algorithm function associated with the given {@link
-     * TokenAlgorithm}
      */
     Algo getAlgorithm(TokenAlgorithm algorithm);
 
+    List<TokenAlgorithm> ECDSA_ALGORITHMS =
+            List.of(TokenAlgorithm.ES256, TokenAlgorithm.ES384, TokenAlgorithm.ES512);
+
+    List<TokenAlgorithm> HMAC_ALGORITHMS =
+            List.of(TokenAlgorithm.HS256, TokenAlgorithm.HS384, TokenAlgorithm.HS512);
+
 }

simple-jwt-facade/src/main/java/com/onixbyte/simplejwt/constants/PredefinedKeys.java

@@ -35,13 +35,14 @@ import java.util.List;
  *     <li>{@link #JWT_ID}: Represents the "jti" (JWT ID) claim.</li>
  * </ul>
  * <p>
- * The class also contains a list of all the standard claim constants, accessible via the {@link #KEYS} field. This
+ * The class also contains a list of all the standard claim constants, accessible via the {@link
- * list can be useful for iterating through all the standard claims or checking for the presence of specific claims.
+ * #KEYS} field. This list can be useful for iterating through all the standard claims or checking
+ * for the presence of specific claims.
  * <p>
- * Note: This class is final and cannot be instantiated. It only serves as a utility class to hold the standard JWT
+ * Note: This class is final and cannot be instantiated. It only serves as a utility class to hold
- * claim constants.
+ * the standard JWT claim constants.
  *
- * @author Zihlu Wang
+ * @author zihluwang
  * @version 1.1.0
  * @since 1.0.0
  */
@@ -85,7 +86,8 @@ public final class PredefinedKeys {
     /**
      * List containing all the standard JWT claim constants.
      */
-    public static final List<String> KEYS = List.of(ISSUER, SUBJECT, AUDIENCE, EXPIRATION_TIME, NOT_BEFORE, ISSUED_AT, JWT_ID);
+    public static final List<String> KEYS =
+            List.of(ISSUER, SUBJECT, AUDIENCE, EXPIRATION_TIME, NOT_BEFORE, ISSUED_AT, JWT_ID);
 
     /**
      * Private constructor will protect this class from being instantiated.

simple-jwt-jjwt/src/main/java/com/onixbyte/simplejwt/jjwt/JjwtTokenResolver.java

@@ -112,9 +112,6 @@ public class JjwtTokenResolver implements TokenResolver<Jws<Claims>> {
         }
 
         if (secret.length() < 32) {
-            log.error("""
-                            The provided secret which owns {} characters is too weak. Please replace it with a stronger one.""",
-                    secret.length());
             throw new WeakSecretException("""
                     The provided secret which owns %s characters is too weak. Please replace it with a stronger one."""
                     .formatted(secret.length()));
@@ -166,9 +163,6 @@ public class JjwtTokenResolver implements TokenResolver<Jws<Claims>> {
         }
 
         if (secret.length() < 32) {
-            log.error(
-                    "The provided secret which owns {} characters is too weak. Please replace it with a stronger one.",
-                    secret.length());
             throw new WeakSecretException(
                     "The provided secret which owns %s characters is too weak. Please replace it with a stronger one."
                             .formatted(secret.length()));

simple-jwt-spring-boot-starter/src/main/java/com/onixbyte/simplejwt/autoconfiguration/AuthzeroTokenResolverAutoConfiguration.java

@@ -23,6 +23,7 @@ import com.onixbyte.simplejwt.authzero.AuthzeroTokenResolver;
 import com.onixbyte.simplejwt.autoconfiguration.properties.SimpleJwtProperties;
 import com.auth0.jwt.interfaces.DecodedJWT;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.onixbyte.simplejwt.config.TokenResolverConfig;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -35,25 +36,23 @@ import org.springframework.boot.context.properties.EnableConfigurationProperties
 import org.springframework.context.annotation.Bean;
 
 /**
- * {@code AuthzeroTokenResolverAutoConfiguration} is responsible for
+ * {@code AuthzeroTokenResolverAutoConfiguration} is responsible for automatically configuring the
- * automatically configuring the Simple JWT library with
+ * Simple JWT library with
- * {@code com.auth0:java-jwt} when used in a Spring Boot application. It
+ * {@code com.auth0:java-jwt} when used in a Spring Boot application. It provides default settings
- * provides default settings and configurations to ensure that the library
+ * and configurations to ensure that the library works smoothly without requiring
- * works smoothly without requiring manual configuration.
+ * manual configuration.
  * <p>
- * This autoconfiguration class sets up the necessary beans and components
+ * This autoconfiguration class sets up the necessary beans and components required for JWT
- * required for JWT generation and validation. It automatically creates and
+ * generation and validation. It automatically creates and configures the
- * configures the {@link AuthzeroTokenResolver} bean based on the available
+ * {@link AuthzeroTokenResolver} bean based on the available options and properties.
- * options and properties.
  * <p>
- * Developers using the Simple JWT library with Spring Boot do not need to
+ * Developers using the Simple JWT library with Spring Boot do not need to explicitly configure the
- * explicitly configure the library, as the autoconfiguration takes care of
+ * library, as the autoconfiguration takes care of setting up the necessary components and
- * setting up the necessary components and configurations automatically.
+ * configurations automatically. However, developers still have the flexibility to customise the
- * However, developers still have the flexibility to customise the behavior of
+ * behavior of the library by providing their own configurations and properties.
- * the library by providing their own configurations and properties.
  *
- * @author Zihlu Wang
+ * @author zihluwang
- * @version 1.0.0
+ * @version 1.6.0
  * @since 1.0.0
  */
 @Slf4j
@@ -70,11 +69,13 @@ public class AuthzeroTokenResolverAutoConfiguration {
      * provided SimpleJwtProperties.
      *
      * @param simpleJwtProperties a {@link SimpleJwtProperties} instance
-     * @param jtiCreator a creator to create ids for JSON Web Token
+     * @param jtiCreator          a creator to create ids for JSON Web Token
-     * @param objectMapper jackson JSON Handler
+     * @param objectMapper        jackson JSON Handler
      */
     @Autowired
-    public AuthzeroTokenResolverAutoConfiguration(SimpleJwtProperties simpleJwtProperties, @Qualifier("jtiCreator") GuidCreator<?> jtiCreator, ObjectMapper objectMapper) {
+    public AuthzeroTokenResolverAutoConfiguration(SimpleJwtProperties simpleJwtProperties,
+                                                  @Qualifier("jtiCreator") GuidCreator<?> jtiCreator,
+                                                  ObjectMapper objectMapper) {
         this.jtiCreator = jtiCreator;
         this.simpleJwtProperties = simpleJwtProperties;
         this.objectMapper = objectMapper;
@@ -90,13 +91,25 @@ public class AuthzeroTokenResolverAutoConfiguration {
      */
     @Bean
     public TokenResolver<DecodedJWT> tokenResolver() {
-        return new AuthzeroTokenResolver(
+        if (TokenResolverConfig.HMAC_ALGORITHMS.contains(simpleJwtProperties.algorithm())) {
-                jtiCreator,
+            return new AuthzeroTokenResolver(
-                simpleJwtProperties.algorithm(),
+                    jtiCreator,
-                simpleJwtProperties.issuer(),
+                    simpleJwtProperties.algorithm(),
-                simpleJwtProperties.secret(),
+                    simpleJwtProperties.issuer(),
-                objectMapper
+                    simpleJwtProperties.secret(),
-        );
+                    "",
+                    objectMapper
+            );
+        } else {
+            return new AuthzeroTokenResolver(
+                    jtiCreator,
+                    simpleJwtProperties.algorithm(),
+                    simpleJwtProperties.issuer(),
+                    simpleJwtProperties.getPrivateKey(),
+                    simpleJwtProperties.getPublicKey(),
+                    objectMapper
+            );
+        }
     }
 
     private final GuidCreator<?> jtiCreator;

simple-jwt-spring-boot-starter/src/main/java/com/onixbyte/simplejwt/autoconfiguration/properties/SimpleJwtProperties.java

@@ -71,6 +71,13 @@ public class SimpleJwtProperties {
      */
     private String secret = SecretCreator.createSecret(32, true, true, true);
 
+    /**
+     * The private key of
+     */
+    private String privateKey;
+
+    private String publicKey;
+
     /**
      * Returns the JWT algorithm configured in the properties.
      *